On 22 Sep 97 at 16:34, Craig Niederberger wrote:

> Hi all,
>
> I'm working on a PIC application to compute average and peak
> pressures in a biomedical application, and can't seem to locate
> sensors--I was wondering if anyone could help me out.  The sensors
> themselves need to be relatively flat--they will measure pressure
> between human skin and an object, and thus can't protrude too much
> lest they do damage to the human whose skin is being measured.  I've
> calculated that the pressures to be measured will be in the range of
> 0-20 psi.  I've looked high and low on the web for the last couple
> of days to no avail.  Can anyone help?

As a quick'n'dirty solution, how about a piece of silicon rubber
tube, filled with liquid (or not) and an ordinary pressure sensor
connected to the other end of tube?  The tube would go between skin
and the object.   There are many such pipe-based pressure sensors.
An advantage for a biomed application is that the tube assembly could
be disposable, thus minimising infection risk between patients.
Alternatively, silicon tubing is resistant to sterilisation.
MikeS
<mikesmith_ozNOSP*M.relaymail.net>
(remove the you know what before replying)